Gonyaulacysta |
Gonyaulacysta mamillifera
|
Nd |
Nd |
|
Gonyaulacysta |
Gonyaulacysta membranea
|
Nd |
Nd |
|
Gonyaulacysta |
Gonyaulacysta scarburghensis
|
England(Yorkshire) |
Early Callovian |
Oxfordian |
Gonyaulacysta |
Gonyaulacysta strigosa
|
China(Heilungkiang) |
Late Kimmeridgian |
Hauterivian |
Gonyaulax |
Gonyaulax areolata
|
England(Yorkshire) |
Early Callovian |
Oxfordian |
Gonyaulax |
Gonyaulax longicornis
|
England |
Late Kimmeridgian |
|
Gonyaulax |
Gonyaulax sarjeantii
|
USSR(Moscow) |
Late Jurassic |
|
Hafniasphaera |
Hafniasphaera septata
|
Australia(Victoria) |
Late Paleocene |
|
Heptasphaera |
Heptasphaera paulaworstellae
|
Nd |
Nd |
|
Hexagonifera |
Hexagonifera laticaudata
|
Nd |
Nd |
|
Hexagonifera |
Hexagonifera scabrata
|
Nd |
Nd |
|
Hystrichokolpoma |
Hystrichokolpoma cinctum
|
England(Berkshire) |
Early Eocene |
|
Hystrichokolpoma |
Hystrichokolpoma eisenackii
|
England(Berkshire) |
Early Eocene |
|
Hystrichokolpoma |
Hystrichokolpoma rigaudiae
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera furcata
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera pilosa
|
Denmark |
Late Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium anthophorum
|
New Guinea(Papua) |
Aptian |
Albian |